Commit 4ecccd9e authored Mar 06, 2013 by Li, Zhen-Hua Committed by Ingo Molnar Mar 06, 2013

iommu, x86: Add DMA remap fault reason

The number of DMA fault reasons in intel's document are from 1
to 0xD, but in dmar.c fault reason 0xD is not printed out.

In this document:

 "Intel Virtualization Technology for Directed I/O Architecture Specification"
 http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf



Chapter 4. Support For Device-IOTLBs

Table 6. Unsuccessful Translated Requests

There is fault reason for 0xD not listed in kernel:

    Present context-entry used to process translation request
    specifies blocking of Translation Requests (Translation Type (T)
    field value not equal to 01b).

This patch adds reason 0xD as well.

Signed-off-by: Li, Zhen-Hua <zhen-hual@hp.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Donald Dutile <ddutile@redhat.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Hannes Reinecke <hare@suse.de>
Link: http://lkml.kernel.org/r/1362537797-6034-1-git-send-email-zhen-hual@hp.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 576cfb40

drivers/iommu/dmar.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1083,6 +1083,7 @@ static const char *dma_remap_fault_reasons[] =
		"non-zero reserved fields in RTP",
		"non-zero reserved fields in CTP",
		"non-zero reserved fields in PTE",
		"PCE for translation request specifies blocking",
		};

		static const char *irq_remap_fault_reasons[] =

Admin message